G.B.
Sounds like a sound sleeper or small bladder. She probably can't help it and will eventually outgrow it, but maybe not for years. I know you don't want to hear that! I had 2 like this and some of my grandkids too - not all. It runs in families and is a real pain, but moms today are blessed with pullups and similar products. I washed bedding daily for years and years. One didn't outgrow it till puberty! 2 of her kids did it too.